Waterloo Greenway Conservancy, housed at the historic Symphony Square in Austin, Texas, is a collection of three historic buildings and an outdoor amphitheater on Waller Creek. Redesigned in 1971 to serve as the headquarters of the Austin Symphony Orchestra, Symphony Square was originally formed by four historic buildings: the Jeremiah Hamilton House, the New Orleans Club, the William P. Hardeman House, and the Michael Doyle House. In 2018, Waterloo Greenway Conservancy, a non-profit organization working to rehabilitate and develop the area along Waller Creek in downtown Austin, completed a comprehensive restoration of three buildings: New Orleans Club, Pavilion, and Hardeman House, all of which serve as the headquarters for the organization and the center for development along the creek.